Apparatus and method for generation of noise signal
    73.
    发明申请
    Apparatus and method for generation of noise signal 有权
    用于产生噪声信号的装置和方法

    公开(公告)号:US20060192624A1

    公开(公告)日:2006-08-31

    申请号:US11344067

    申请日:2006-02-01

    CPC classification number: H03B29/00 H03B21/01

    Abstract: An apparatus and method for generation of a noise signal are provided. The apparatus includes a noise synthesizing module and a noise signal transfer module. The noise synthesizing module includes a voltage controlled oscillator, a phase frequency detector, a phase locked loop filter, and a reference generator which form a phase locked loop. An output signal of the reference generator is provided to a first phase-frequency input of the phase-frequency detector, and an output signal of the voltage controlled oscillator is provided to a second input of the phase-frequency detector. An output signal of the phase-frequency detector is provided to an input of the phase locked loop filter, and an output of the phase locked loop filter is provided to a frequency control input of the voltage controlled oscillator. The noise signal transfer module includes a sinusoidal generator and a frequency mixer having a first input which is provided with an output signal of the phase frequency detector and a second input which is provided with an output signal of the sinusoidal.

    Abstract translation: 提供了一种用于产生噪声信号的装置和方法。 该装置包括噪声合成模块和噪声信号传送模块。 噪声合成模块包括形成锁相环的压控振荡器,相位频率检测器,锁相环滤波器和参考发生器。 参考发生器的输出信号被提供给相位频率检测器的第一相位频率输入,并且压控振荡器的输出信号被提供给相位频率检测器的第二输入端。 将相位频率检测器的输出信号提供给锁相环滤波器的输入,并将锁相环滤波器的输出提供给压控振荡器的频率控制输入端。 噪声信号传送模块包括正弦发生器和具有第一输入的混频器,第一输入端设置有相位频率检测器的输出信号,第二输入端设有正弦波输出信号。

    Mixer
    74.
    发明授权
    Mixer 有权
    混合器

    公开(公告)号:US06970687B1

    公开(公告)日:2005-11-29

    申请号:US09904951

    申请日:2001-07-13

    Abstract: The invention provides a mixer comprising a multiplier circuit having a first and a second mixer, a generator for generating two first and two second control signals for controlling the first and second mixers, wherein the first and second control signals are in each case balanced signals and the first control signals have a frequency f1 and the second control signals have a different frequency f2.

    Abstract translation: 本发明提供了一种包括具有第一和第二混频器的乘法电路的混频器,用于产生用于控制第一和第二混频器的两个第一和第二控制信号的发生器,其中第一和第二控制信号在每种情况下都是平衡信号, 第一控制信号具有频率f 1,并且第二控制信号具有不同的频率f 2。

    System and method for signal limiting
    75.
    发明申请
    System and method for signal limiting 失效
    用于信号限制的系统和方法

    公开(公告)号:US20050054295A1

    公开(公告)日:2005-03-10

    申请号:US10957043

    申请日:2004-10-01

    Inventor: Shervin Moloudi

    Abstract: Methods and systems for processing a signal with a corresponding noise profile are disclosed. Aspects of the method may comprise analyzing spectral content of the noise profile. At least one noise harmonic within the signal may be filtered based on said analyzed spectral content. The filtered signal may be limited. The noise profile may comprise a phase noise profile. The signal may comprise at least one of a sinusoidal signal and a noise signal. At least one filter coefficient that is used to filter said at least one noise harmonic may be determined. The filtering may comprise low pass filtering and the limiting may comprise hard-limiting the filtered signal. The signal may be modulated prior to the filtering. The signal may be downconverted prior to the modulating. At least one signal component of the signal may be downconverted.

    Abstract translation: 公开了用于处理具有相应噪声分布的信号的方法和系统。 该方法的方面可以包括分析噪声分布的频谱内容。 可以基于所述分析的频谱内容来过滤信号内的至少一个噪声谐波。 滤波后的信号可能受到限制。 噪声分布可以包括相位噪声分布。 信号可以包括正弦信号和噪声信号中的至少一个。 可以确定用于滤波所述至少一个噪声谐波的至少一个滤波器系数。 滤波可以包括低通滤波,并且限制可以包括硬限幅滤波信号。 信号可以在滤波之前进行调制。 信号可以在调制之前进行下变频。 信号的至少一个信号分量可以被下变频。

    Frequency synthesizers for supporting voice communication and wireless networking standards
    76.
    发明申请
    Frequency synthesizers for supporting voice communication and wireless networking standards 有权
    用于支持语音通信和无线网络标准的频率合成器

    公开(公告)号:US20040198256A1

    公开(公告)日:2004-10-07

    申请号:US10137101

    申请日:2002-05-01

    CPC classification number: H03L7/16 H03B21/01 H04B1/406

    Abstract: Techniques are described that facilitate the generation of different waveforms at different frequencies required for transmission and reception of wireless voice signals and wireless data signals. For example, a technique may include generating a first waveform in a wireless communication device using a frequency synthesizer, wherein the first waveform has a frequency associated with a voice communication standard, and generating a second waveform in the wireless communication device using the same frequency synthesizer, wherein the second waveform has a frequency associated with a wireless networking standard. In this manner, a wireless communication device can be improved and possibly simplified.

    Abstract translation: 描述了促进在发送和接收无线语音信号和无线数据信号所需的不同频率下生成不同波形的技术。 例如,技术可以包括使用频率合成器在无线通信设备中生成第一波形,其中第一波形具有与语音通信标准相关联的频率,以及使用相同的频率合成器在无线通信设备中生成第二波形 ,其中所述第二波形具有与无线联网标准相关联的频率。 以这种方式,可以改进和可能地简化无线通信设备。

    High frequency oscillator
    77.
    发明申请
    High frequency oscillator 失效
    高频振荡器

    公开(公告)号:US20030098746A1

    公开(公告)日:2003-05-29

    申请号:US10243617

    申请日:2002-09-13

    CPC classification number: H03B21/01

    Abstract: A high frequency oscillator for combining outputs of two oscillator to generate an oscillation output. The oscillators has a substrate, a slot line formed on a first main plane of the substrate and having both longitudinal ends, the both longitudinal ends being electrically short-circuited, a first and a second amplifier for oscillation, each disposed on one and the other side of the slot line, and having outputs of the same oscillation frequency, and an unbalanced transmission line for connecting input terminals of the first and second amplifiers to each other and for connecting output terminals of the first and second amplifiers to each other. The unbalanced transmission line traverses the slot line and forms a closed loop including the first and second amplifiers.

    Abstract translation: 一个用于组合两个振荡器的输出以产生振荡输出的高频振荡器。 所述振荡器具有衬底,形成在所述衬底的第一主平面上的槽线,并且具有两个纵向端,所述两个纵向端部电短路,用于振荡的第一和第二放大器,每个放置在一个和另一个上 并且具有相同振荡频率的输出,以及用于将第一和第二放大器的输入端彼此连接并用于将第一和第二放大器的输出端彼此连接的不平衡传输线。 不平衡传输线穿过槽线并形成包括第一和第二放大器的闭环。

    Adaptive radio transceiver with low noise amplification
    78.
    发明授权
    Adaptive radio transceiver with low noise amplification 失效
    具有低噪声放大的自适应无线电收发器

    公开(公告)号:US06417737B1

    公开(公告)日:2002-07-09

    申请号:US09692421

    申请日:2000-10-18

    Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

    Abstract translation: 在说明书和附图中描述和示出的本发明的示例性实施例是具有接收器,发射器,本地振荡器(LO)发生器,控制器和自检单元的收发器。 所有这些组件都可以封装以集成到单个IC中,其中包括过滤器和电感器等组件。 用于接收机,发射机和LO发生器的自适应编程和校准的控制器。 自检单元产生用于确定接收机,发射机和LO发生器的增益,频率特性,选择性,本底噪声和失真特性。 要强调的是,该摘要被提供以符合要求摘要的规则,这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是,它不会用于解释或限制权利要求的范围或含义。

    Direct digital to analog microwave frequency signal simulator
    79.
    发明授权
    Direct digital to analog microwave frequency signal simulator 失效
    直接数模微波频率信号模拟器

    公开(公告)号:US5764087A

    公开(公告)日:1998-06-09

    申请号:US474085

    申请日:1995-06-07

    CPC classification number: H03B21/01 G06F1/0335

    Abstract: A direct digital-to-analog microwave frequency signal synthesizer device which employs both wideband and narrowband direct digital frequency synthesizer (DDFS) circuitry to improve frequency and phase agility, reduce spurious performance, and minimize direct analog circuitry. A clock output having an extremely precise and highly stabilized frequency is fed to the wideband DDFS circuit and to the narrowband DDFS circuit. One or the other is selectively enabled by control logic circuitry. When the former is enabled, precision, high frequency resolution, low spurious, fast frequency switching is achieved at the microwave output. When the latter is enabled, precision, high frequency and phase resolution, low spurious, is achieved, providing frequency chirp, and frequency phase control at the microwave output. The output of the wideband DDFS circuit is processed to reduce the spurious response and up-converted, while the output of the narrow band DDFS circuit is directly up-converted. The selected DDFS circuit, is frequency up-converted to provide a synthesized microwave output signal.

    Abstract translation: 一种采用宽带和窄带直接数字频率合成器(DDFS)电路的直接数/模微波频率信号合成器装置,以提高频率和相位敏捷性,减少杂散性能,并最大限度地减少直接模拟电路。 具有非常精确和高度稳定的频率的时钟输出馈送到宽带DDFS电路和窄带DDFS电路。 一个或另一个由控制逻辑电路选择性地使能。 当前者使能时,在微波输出端实现精密,高频分辨率,低杂散,快速频率切换。 当后者使能时,实现精确,高频和相位分辨率,低杂散,提供频率啁啾和微波输出的频率相位控制。 处理宽带DDFS电路的输出,以减少杂散响应和上变频,而窄带DDFS电路的输出被直接上变频。 所选的DDFS电路经过上变频,提供合成的微波输出信号。

    Tone operated single side-band communication system
    80.
    发明授权
    Tone operated single side-band communication system 失效
    单声道单声道通信系统

    公开(公告)号:US3867700A

    公开(公告)日:1975-02-18

    申请号:US41781773

    申请日:1973-11-21

    Applicant: WYCOFF KEITH H

    Inventor: WYCOFF KEITH H

    CPC classification number: H03B21/01 H04B1/68

    Abstract: The system includes a transmitter in which is provided a tone generator having a first oscillator to generate a first signal of a fixed frequency and a second oscillator which is variable to generate a second signal of a selected frequency. A multiplier receives the signals and provides a pair of tones having frequencies respectively equal to the sum of and difference between their frequencies. A switch may be provided so that both inputs to the multiplier are received from the variable frequency oscillator, in which case the output of the multiplier will be a single tone having a frequency twice that of the signal produced by the variable frequency oscillator. In either event, the tones are modulated on an RF wave. The system further comprises a receiver which has processing apparatus to receive incoming single side-band signals and convert them into IF components. A product detector in conjunction with an IF carrier source is operated to detect the IF signal and provide an intelligence message contained therein. A loudspeaker converts the intelligence message into audio information. An AM detector mixes the single side-band components to provide a signal having a frequency equal to the difference in frequencies between the tones in the incoming single side-band signals. A tuned circuit is responsive to a difference frequency signal of a predetermined frequency to provide an output signal to operate an electronic switch. In the presence of the output signal, the electronic switch produces an enabling signal to render the audio circuit operative and also to render the product detector operative and to render the AM detector inoperative. In the absence of the enabling signal, the audio circuit is inoperative as is the product detector but the AM detector is operative.

    Abstract translation: 该系统包括发射机,其中提供有具有第一振荡器以产生固定频率的第一信号的音调发生器,以及第二振荡器,该第二振荡器可变以产生所选频率的第二信号。 乘法器接收信号并提供一对频率,其频率分别等于它们的频率之和和之差。 可以提供开关,使得从可变频率振荡器接收到乘法器的两个输入,在这种情况下,乘法器的输出将是具有由可变频率振荡器产生的信号的频率的两倍的单音。 在任一情况下,在RF波上调制音调。

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